Apparatus for making novelty yarn



Jan. 22, 1963 H. SERVAGE 3,074,223 APPARATUS FOR MAKING NOVELTY YARNFiled Dec. 14, 1959 In ventor hA/r v 55E V465 A ltorne y United StatesPatent 3,074,223 APPARATUS FOR MAKING NGVELTY YARN Henri Servage,Cremieu, France, assignor to Moulinage et Retorderie de Chavanoz,Chavanoz, France, a corporation of France Filed Dec. 14, 1959, Ser. No.859,511 Claims priority, application France Dec. 17, 1958 1 Claim. (Cl.57-18) This invention relates to novelty yarns and more particularly toa yarn having loops or ribs spaced therealong.

It is known to produce novelty yarns by winding a cover yarn around acore yarn. The cover yarn is unwound from a bobbin mounted on a hollowspindle, and a core yarn is fed through the hollow interior of thespindle. The cover yarn winds on to the core yarn as the latteradvances.

According to the present invention, a loop yarn can be obtained by avery simple means based upon the above method. The method consists inimparting an intermittent advance of very short period to the core yarn.

The said intermittent advance can be obtained in many ways, byintermittent drive of the feed device taking the yarn from a feed cop,or by the use of recessed feed members, or feed members comprisingescapement mechamsm.

A convenient means consists in the use of a Geneva drive similar to thatemployed in motion picture cameras and projectors, to control the yarnfeed members. At each stoppage of the core yarn, a loop is formed.

Various effects can be obtained by the choice of the core yarns and ofthe cover yarns. The two yarns may be of like or dissimilar nature andnatural, artificial or synthetic textile yarns may be employed, or evenglass yarns or yarns of other materials. The deniers of the variousyarns may differ.

The core and the cover may be of contrasting colors. Plied yarns orother novelty yarns may also be employed.

The nature of the invention will be better understood by referring tothe following description, taken in connection with the accompanyingdrawing wherein a specific embodiment has been set forth for purposes ofillustration.

In the drawing:

FIGURE 1 is a diagrammatic representation of an apparatus for carryingout the invention; and

FIG. 2 is a detail view illustrating the novelty yarn produced by theapparatus of FIGURE 1.

Referring to the drawing more in detail a bobbin 3 carrying a package ofcover yarn 4 is shown as mounted on a hollow spindle 1 carrying a whorl2. This package is unwound endwise by means of a guide 5. A secondpackage 6, for example, a cop carrying the core yarn, is disposed belowthe hollow spindle 1. The core yarn is unwound by slightly crossed feedrolls 7 and 8, one of which is driven. The core yarn makes a number ofturns around the rolls 7 and 8 so as to be fed thereby. One of theserolls, for example the roll 8, is intermittently driven by suitabledrive means shown as a Geneva gear in the form of a star wheel 10mounted to rotate with the feed roll 8 and a continuously driven disc 11carrying a pin .12 engaging slots in the star wheel 10 for elfecting anintermittent drive.

The core yarn fed by the rolls 7 and 8 passes through the hollow spindle1 and is plied with the cover yarn at the outlet end of the spindle. Theplied yarn is wound on to the bobbin 9, which is driven synchronouslywith the driving roll 8.

In operation the guide 5 is continuously rotated so as to wind the coveryarn 4 about the core yarn as the latter advances. Due to theintermittent feed of the core yarn the cover yarn 4 will be wound aroundthe core yarn in a loop when the core yarn s stationary and will extendalong the core yarn in helical form between loops in the areas where thecore yarn is advanced by the drive mechanism as shown in FIG. 2. In thisway a spaced loop efiect is obtained.

What is claimed is:

In an apparatus for making a novelty yarn, including a hollow spindle,means for feeding a core yarn axially through said hollow spindle, acover yarn package disposed on said spindle, means for withdrawing saidcover yarn from said package and for plying said cover yarn, and meansfor continuously rotating said spindle at a uniform rate to cause saidcover yarn to wrap around said core yarn in successive turns, theimprovement which comprises at Geneva drive for actuating the core yarnfeeding means to feed said core yarn through said hollow spindle with anintermittent movement between periods of dwell.

References Cited in the file of this patent UNITED STATES PATENTS699,910 Cyr May 13, 1902 1,643,693 Black Sept. 27, 1927 2,331,240 SelvigOct. 5, 1943 2,365,661 Winslow Dec. 19, 1944 2,625,833 Johnson Jan. 20,1953 2,731,789 Holder Jan. 24, 1956 2,923,120 Bush et a1. Feb. 2, 1960

